Fig. 1
Effect of storage temperature and time on AA and DHA. A Variation of AqH AA and DHA in samples stored at 27 °C and 4 °C. B Variation of AqH AA and DHA in samples stored at − 20 °C and − 80 °C. Values are presented as mean values at time intervals in hours. *p < 0.05 compared to baseline samples. Data series bars represent standard error. AqH aqueous humor, AA ascorbic acid, DHA dehydroascorbic acid